Description: This common crustose lichen has a shiny, chestnut brown thallus bearing abundant dark brown discs with a paler, somewhat crumpled margin. It is frequent on hard, acid rocks and boulders in the uplands and also along the coast.

Key Identification Features:

• The thick, cracked, shiny dark brown thallus and discs with a pale margin should suggest this species
• The white, UV reaction helps to confirm it as do the simple spores.

Original text submitted by Simon Davey

Distribution Map from NBN: Protoparmelia badia at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Protoparmelia badia at iNaturalist World Species Observations database.